Clamping device for glue-presses.



No. 755,384 PATENTBD MAR. 22, 1904';

" A. E. PALMER.

GLAMPING DEVICE FOR GLUE PRESSESl APPLICATION rum) DBO. 19. 1903. no 1191121.. 2 sums-SHEEN.

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PATENT OFFICE.

ALBERT E. PALMER, OF NORVELL, MICHIGAN.

CLAIVIPING DEVICE FOR GLUE-PRESSES.

SPECIFICATION forming part of Letters Patent No. 755,384, dated. March 22, 1904.

Application filed December 19, 1903. Serial No. 185,895. (No model.)

T on whom, it may concern:

Be it known that I, ALBERT E. PALMER, a citizen of the United States, residing at Norvell, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Clamping Devices for Glue- Presses; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification,

and to the letters of reference marked thereon.

The present invention has reference to that class of clamping devices for glue-presses for which patents were granted to me and dated April 11, 1893, No. 495,054, and May 16, 1899, No. 625,193; and the object thereof is to provide means whereby the slack in the work is all taken up, leaving the'connectionlink in the device to exert its power in connection with the operating-lever at a point where the power is greatest, which is at a point when the lever is at right angles with the clamping-bar, therebymaterially facilitating the operating of the device and rendering it more perfect in its action and providing a clamping device that will perfectly accomplish its work with ease and effectiveness.

The invention consists in a clamping device for glue-presses constructed substantially as shown in the drawings and hereinafter described and claimed.

Figure l of the drawings is a perspective view showing a number of my improved clamping devices in use; Fig. 2, an under side plan view of one of the clamping devices, on an enlarged scale, with the under 'portion thereof partly broken away to show the position 'of the wedge with relation to the other parts of the device; Fig. 3, a longitudinal Vertical section taken on line 3 3 of Fig. 2.

In the accompanying drawings, X Y show boards or other objects to be connected to gether, and Z the usual slotted standard to which the notched clamping-bar is connected, which is shown in my former patents.

The clamping-bar A has an opening a, with which engages the tooth B, depending from the under side of the clamping device located above it, as shown in Fig. 1 of the drawings, said tooth being preferably cast with the plate C.

Between the rear portion of the notched clamping-bar A and the plate C is located the operating hand-lever D, which is pivotally connected thereto by means of a pivot-pin Z), said lever having a stop 0 to limit its throw to a right angle with the clamping-bar.

Suitably pivoted to the inner end of the hand-lever D is a toggle-link e, the free end of said link having a pin d, which engages an elongated slot 6 in the plate C to form a guide for the link, and a similar pin f extends from the upper side of the link, which engages a slidable bracket F. I

The bracket F loosely engages a movable wedge G, and said wedge in turn similarly engages the movable clamping-jaw H of the usual construction.

In connecting the slidable bracket F and the clamping-jaw H to the wedge G, I prefer to construct said wedge with upwardly-extending guide-flanges g, which loosely engage groove it in the slidable bracket F and similar groove 2' in the clamping-jaw H, as shown in Fig. 3 of the drawings.

The slidable bracket F has guide-lugs j, which embrace the sides of the plate G and the sides of the clamping-bar A, and the clamping-jaw H has similar lugs it, which embrace the sides of the clamp-bar only, thereby forming perfect guides for the movement of the slidable bracket and the slidable clamping-jaw.

The apex or reduced end of the Wedge G has a suitable stop Z to limit its movement, and in use the several clamping devices herein described are placed one above the other, the tooth B of one device entering the opening a of the device below it.

The work is placed as indicated in Fig. 1 of the drawings, one clamping device locking into the one below it, and when the Work is placed in position by the movement of the wedge, as indicated by the arrow in Fig.1 of the drawings, the movable clamping-jaw will be forced forward against the work, as shown by the arrow, after which the operating handlever is brought into action, thereby taking up all slack in the work before operating the lever,

which is a decided advantage over similar devices heretofore in use.

In describing in detail the construction of the clamping device it is evident that many changes or modifications may be resorted to without in any manner departing from the principle of my invention, and therefore I do not wish to be understood as limiting my invention to the construction herein shown and described.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A clamping device for glue-presses, consisting of a clamping-bar, a movable clamping-jaw, an operating hand-lever connecting therewith, and a movable wedge adapted to act upon the clamping-jaw to take up the slack before the lever is operated, substantially as and for the purpose set forth.

2. A clamping device for glue-presses, consisting of a clamping-bar, a movable clamping jaw, a pivoted hand lever, a slidable bracket, a toggle-link connecting the lever and bracket together, and a Wedge connecting the bracket with the clamping-jaw, substantially as and for the purpose specified.

3. A clamping device for glue-presses, consisting of a clamping-bar, a pivoted handlever, a slidable bracket, a toggle-link connecting the lever with the bracket, a slidable clamping-jaw, a slidable Wedge having guideflanges which engage grooves in the bracket and clamping-jaw, substantially as and for the purpose described.

In testimony whereof I afliX my signature in presence of two witnesses.

ALBERT E. PALMER.

Witnesses:

J AMES HUDSON, CLIFTON H. VEDDER. 

